Update #include-related dependencies in Mamfiles

I grepped for #include changes in all the commits and compared
that to the changes in the Mamfiles. I found 7 commits that don't
update the Mamfiles with the appropriate dependencies while
adding #includes, as I only learned how this works after having
worked with this code for some time.

This commit adds the missing Mamfile updates for the
corresponding #include changes in the following commits:
06e721c3, 65d363fd, 70fc1da7, 79d19458, b1a41311, bb4d6a2e,
db71b3ad, and this commit.

Additionally:

src/lib/libast/comp/setlocale.c:
- Change include errno.h to error.h to use EILSEQ fallback if
  needed; remove corresponding #ifdef (re: 4dcf5c50, 71bfe028).

src/cmd/ksh93/Mamfile:
- Fix a broken dependency on libast FEATURE/float (re: 72968eae).
  We can't use 'prev' for a file that was not mentioned before in
  the same Mamfile, we have to use a 'make'...'done' on the first
  mention. Add subdependencies matching those in libast/Mamfile.

src/cmd/ksh93/Mamfile

@@ -177,6 +177,10 @@ make install
 					done ${PACKAGE_ast_INCLUDE}/cmd.h dontcare
 					prev ${PACKAGE_ast_INCLUDE}/shcmd.h implicit
 					make include/nval.h implicit
+						make ${PACKAGE_ast_INCLUDE}/hash.h implicit
+							make ${PACKAGE_ast_INCLUDE}/hashpart.h implicit
+							done ${PACKAGE_ast_INCLUDE}/hashpart.h dontcare
+						done ${PACKAGE_ast_INCLUDE}/hash.h dontcare
 						prev ${PACKAGE_ast_INCLUDE}/option.h implicit
 						make ${PACKAGE_ast_INCLUDE}/cdt.h implicit
 							prev ${PACKAGE_ast_INCLUDE}/ast_common.h implicit
@@ -280,6 +284,11 @@ make install
 			done alarm.o generated
 			make cd_pwd.o
 				make bltins/cd_pwd.c
+					make include/test.h implicit
+						prev include/shtable.h implicit
+						prev include/defs.h implicit
+						prev FEATURE/options implicit
+					done include/test.h
 					make ${PACKAGE_ast_INCLUDE}/ls.h implicit
 						make ${PACKAGE_ast_INCLUDE}/ast_mode.h implicit
 						done ${PACKAGE_ast_INCLUDE}/ast_mode.h dontcare
@@ -330,11 +339,7 @@ make install
 			done cflow.o generated
 			make deparse.o
 				make sh/deparse.c
-					make include/test.h implicit
+					prev include/test.h implicit
-						prev include/shtable.h implicit
-						prev include/defs.h implicit
-						prev FEATURE/options implicit
-					done include/test.h
 					prev include/shnodes.h implicit
 					prev include/defs.h implicit
 				done sh/deparse.c
@@ -408,6 +413,9 @@ make install
 			done hist.o generated
 			make misc.o
 				make bltins/misc.c
+					prev ${PACKAGE_ast_INCLUDE}/times.h implicit
+					prev FEATURE/time implicit
+					prev FEATURE/locale implicit
 					make include/jobs.h implicit
 						prev ${PACKAGE_ast_INCLUDE}/vmalloc.h implicit
 						prev include/terminal.h implicit
@@ -703,6 +711,7 @@ make install
 					prev include/edit.h implicit
 					prev include/terminal.h implicit
 					prev include/builtins.h implicit
+					prev include/jobs.h implicit
 					prev include/path.h implicit
 					prev include/defs.h implicit
 				done sh/args.c
@@ -1217,7 +1226,11 @@ make install
 						exec - iffe ${IFFEFLAGS} -v -c "${CC} ${mam_cc_FLAGS} ${KSH_RELFLAGS} ${KSH_SHOPTFLAGS} ${CCFLAGS} ${LDFLAGS}" ref ${mam_cc_L+-L.} ${mam_cc_L+-L${INSTALLROOT}/lib} -I${PACKAGE_ast_INCLUDE} -I${INSTALLROOT}/include ${mam_libdll} ${mam_libcmd} ${mam_libast} ${mam_libm} ${mam_libnsl} : run features/math.sh ${PACKAGEROOT}/src/cmd/ksh93/data/math.tab
 						make ${PACKAGE_ast_INCLUDE}/ast_standards.h implicit
 						done ${PACKAGE_ast_INCLUDE}/ast_standards.h dontcare
-						prev ${INSTALLROOT}/src/lib/libast/FEATURE/float implicit
+						make ${INSTALLROOT}/src/lib/libast/FEATURE/float implicit
+							make ${INSTALLROOT}/src/lib/libast/FEATURE/standards implicit
+							done ${INSTALLROOT}/src/lib/libast/FEATURE/standards dontcare
+							prev ${PACKAGE_ast_INCLUDE}/ast_common.h implicit
+						done ${INSTALLROOT}/src/lib/libast/FEATURE/float dontcare
 					done FEATURE/math generated
 					prev include/streval.h implicit
 					prev FEATURE/options implicit
@@ -1263,6 +1276,7 @@ make install
 			done options.o generated
 			make signals.o
 				make data/signals.c
+					prev include/jobs.h implicit
 					prev include/defs.h implicit
 				done data/signals.c
 				meta signals.o %.c>%.o data/signals.c signals

src/lib/libast/Mamfile

@@ -1099,6 +1099,7 @@ make install
 			done pathposix.o generated
 			make pathtemp.o
 				make path/pathtemp.c
+					prev include/error.h implicit
 					make include/tm.h implicit
 						prev include/times.h implicit
 						prev include/ast.h implicit
@@ -1472,6 +1473,7 @@ make install
 				make comp/setlocale.c
 					prev include/ast_windows.h implicit
 					prev std/wctype.h implicit
+					prev include/error.h implicit
 					prev include/namval.h implicit
 					make include/mc.h implicit
 						prev include/ast.h implicit
@@ -2559,6 +2561,7 @@ make install
 			make debug.o
 				make misc/debug.c
 					prev include/times.h implicit
+					prev FEATURE/time implicit
 					prev include/debug.h implicit
 					prev include/error.h implicit
 					prev include/ast.h implicit

src/lib/libast/comp/setlocale.c

@@ -36,7 +36,7 @@
 #include <ctype.h>
 #include <mc.h>
 #include <namval.h>
-#include <errno.h>
+#include <error.h>
 
 #if ( _lib_wcwidth || _lib_wctomb ) && _hdr_wctype
 #include <wctype.h>
@@ -633,9 +633,7 @@ utf8_mbtowc(wchar_t* wp, const char* str, size_t n)
 	if (!*sp)
 		return 0;
  invalid:
-#ifdef EILSEQ
 	errno = EILSEQ;
-#endif
 	ast.mb_sync = (const char*)sp - str;
 	return -1;
 }