Various minor capitalization and typo fixes (#371)

This commit fixes various minor typos, punctuation errors and
corrects the capitalization of many names.

src/lib/libast/regex/regalloc.c

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex alloc control
+ * POSIX regex alloc control
  */
 
 #include "reglib.h"

src/lib/libast/regex/regcache.c

@@ -24,7 +24,7 @@
 
 /*
  * regcomp() regex_t cache
- * at&t research
+ * AT&T Research
  */
 
 #include <ast.h>
@@ -118,7 +118,7 @@ regcache(const char* pattern, regflags_t reflags, int* status)
 
 	/*
 	 * flush the cache if the locale changed
-	 * the ast setlocale() intercept maintains
+	 * the AST setlocale() intercept maintains
 	 * persistent setlocale() return values
 	 */
 

src/lib/libast/regex/regclass.c

@@ -43,7 +43,7 @@ struct Ctype_s
 static Ctype_t*		ctypes;
 
 /*
- * this stuff gets around posix failure to define isblank,
+ * this stuff gets around pre-POSIX.1 failure to define isblank,
  * and the fact that ctype functions are macros
  * and any local extensions that may not even have functions or macros
  */

src/lib/libast/regex/regcomp.c

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex compiler
+ * POSIX regex compiler
  */
 
 #include "reglib.h"

src/lib/libast/regex/regdecomp.c

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex decompiler
+ * POSIX regex decompiler
  */
 
 #include "reglib.h"

src/lib/libast/regex/regerror.c

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex error message handler
+ * POSIX regex error message handler
  */
 
 static const char id[] = "\n@(#)$Id: regex (AT&T Research) 2012-05-31 $\0\n";

src/lib/libast/regex/regexec.c

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex executor
+ * POSIX regex executor
  * single unsized-string interface
  */
 

src/lib/libast/regex/regfatal.c

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex fatal error interface to error()
+ * POSIX regex fatal error interface to error()
  */
 
 #include "reglib.h"

src/lib/libast/regex/reginit.c

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex state and alloc
+ * POSIX regex state and alloc
  */
 
 #include "reglib.h"

src/lib/libast/regex/reglib.h

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex implementation
+ * POSIX regex implementation
  *
  * based on Doug McIlroy's C++ implementation
  * Knuth-Morris-Pratt adapted from Corman-Leiserson-Rivest
@@ -72,7 +72,7 @@ typedef struct regsubop_s
 
 #define MBSIZE(p)	((ast.tmp_int=mbsize(p))>0?ast.tmp_int:1)
 
-#undef	RE_DUP_MAX			/* posix puts this in limits.h!	*/
+#undef	RE_DUP_MAX			/* POSIX puts this in limits.h!	*/
 #define RE_DUP_MAX	(INT_MAX/2-1)	/* 2*RE_DUP_MAX won't overflow	*/
 #define RE_DUP_INF	(RE_DUP_MAX+1)	/* infinity, for *		*/
 #define BACK_REF_MAX	9

src/lib/libast/regex/regnexec.c

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex executor
+ * POSIX regex executor
  * single sized-record interface
  */
 

src/lib/libast/regex/regrexec.c

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex record executor
+ * POSIX regex record executor
  * multiple record sized-buffer interface
  */
 

src/lib/libast/regex/regsubcomp.c

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex ed(1) style substitute compile
+ * POSIX regex ed(1) style substitute compile
  */
 
 #include "reglib.h"

src/lib/libast/regex/regsubexec.c

@@ -23,7 +23,7 @@
 #pragma prototyped
 
 /*
- * posix regex ed(1) style substitute execute
+ * POSIX regex ed(1) style substitute execute
  */
 
 #include "reglib.h"