Fix various minor problems and update the documentation (#237)

These are minor fixes I've accumulated over time. The following
changes are somewhat notable:

- Added a missing entry for 'typeset -s' to the man page.
- Add strftime(3) to the 'see also' section. This and the date(1)
  addition are meant to add onto the documentation for 'printf %T'.
- Removed the man page the entry for ksh reading $PWD/.profile on
  login. That feature was removed in commit aa7713c2.
- Added date(1) to the 'see also' section of the man page.
- Note that the 'hash' command can be used instead of 'alias -t' to
  workaround one of the caveats listed in the man page.
- Use an 'out of memory' error message rather than 'out of space'
  when memory allocation fails.
- Replaced backticks with quotes in some places for consistency.
- Added missing documentation for the %P date format.
- Added missing documentation for the printf %Q and %p formats
  (backported from ksh2020: https://github.com/att/ast/pull/1032).
- The comments that show each builtin's options have been updated.

src/lib/libast/man/astsa.3

@@ -125,7 +125,7 @@ Returns the error message text corresponding to the
 .Ss "char* strerror(int \fIerrno\fP)"
 Equivalent to fmterror(\fIerrno\fP).
 .Ss "int strgrpmatch(const char* \fIstring\fP, const char* \fIpattern\fP, int* \fIsub\fP, int \fInsub\fP, int \fIflags\fP)"
-Matches the null terminated \fIstring\fP against the null terminated
+Matches the null-terminated \fIstring\fP against the null-terminated
 .BR ksh (1)
 augmented \fIpattern\fP.
 If \fIsub\fP!=0 then \fIsub\fP[2*\fIi\fP] is set to the start offset and \fIsub\fP[2*\fIi\fP+1] is set

src/lib/libast/man/hash.3

@@ -592,7 +592,7 @@ Explicit calls to this routine are not necessary as hash tables
 are automatically resized.
 .TP
 .L "int strhash(char* name)"
-Hashes the null terminated character string
+Hashes the null-terminated character string
 .L name
 using a linear congruent pseudo-random number generator algorithm
 and returns a non-negative

src/lib/libast/man/sfio.3

@@ -1545,7 +1545,7 @@ for indicating the type of a scanned element.
 For example, \f5%hd\fP means scanning a \f5short int\fP.
 The flags \f5ll\fP and \f5L\fP mean respectively scanning an
 integer or a floating point value with largest size
-(i.e, \f5Sflong_t\fP or \f5Sfdouble_t\fP).
+(i.e., \f5Sflong_t\fP or \f5Sfdouble_t\fP).
 .PP
 The \f5%i\fP, \f5%d\fP and \f5%u\fP patterns scan numbers in bases
 from \f52\fP to \f564\fP.

src/lib/libast/man/strcopy.3

@@ -43,7 +43,7 @@ strcopy \- copy strings
 .L "char* strcopy(char* a, char* b)"
 .SH DESCRIPTION
 .I strcopy
-copies the nul-terminated string
+copies the null-terminated string
 .I b
 into
 .IR a .

src/lib/libast/man/strdup.3

@@ -38,12 +38,12 @@
 ..
 .TH STRDUP 3
 .SH NAME
-strdup \- duplicate nul-terminated string
+strdup \- duplicate null-terminated string
 .SH SYNOPSIS
 .L "char* strdup(char* s)"
 .SH DESCRIPTION
 .I strdup
-copies the nul-terminated string
+copies the null-terminated string
 .I s
 to a new location provided by
 .IR malloc (3)

src/lib/libast/man/stresc.3

@@ -45,7 +45,7 @@ stresc \- convert character constants in string
 .I stresc
 converts
 .L \e
-character constant expressions in the nul-terminated string
+character constant expressions in the null-terminated string
 .I s
 in place and returns the length of the converted
 .IR s .

src/lib/libast/man/streval.3

@@ -43,7 +43,7 @@ streval \- long integer arithmetic expression evaluator
 .L "long streval(char* s, char** e, long (*conv)(char* cs, char** ce))"
 .SH DESCRIPTION
 .I streval
-evaluates the long integer arithmetic expression in the nul-terminated string
+evaluates the long integer arithmetic expression in the null-terminated string
 .I s
 and returns the result.
 If

src/lib/libast/man/stropt.3

@@ -49,7 +49,7 @@ stropt \- table driven option expression evaluator
 .L "           void* a)"
 .SH DESCRIPTION
 .I stropt
-parses option expressions in the nul-terminated string
+parses option expressions in the null-terminated string
 .I s
 using the option names in
 .IR tab .

src/lib/libast/man/strperm.3

@@ -43,7 +43,7 @@ strperm \- evaluate file permission expression
 .L "int strperm(char* s, char** e, int p)"
 .SH DESCRIPTION
 .I strperm
-applies a file permission expression in the nul-terminated string
+applies a file permission expression in the null-terminated string
 .I s
 to the initial file permission mask
 .IR p .

src/lib/libast/man/strtape.3

@@ -43,7 +43,7 @@ strtape \- convert string to tape device pathname
 .L "char* strtape(char* s, char** e)"
 .SH DESCRIPTION
 .I strtape
-converts the generic tape device specification in the nul-terminated string
+converts the generic tape device specification in the null-terminated string
 .I s
 to a local tape device pathname.
 A pointer to the device pathname is returned.

src/lib/libast/man/strton.3

@@ -43,7 +43,7 @@ strton \- convert string to long integer
 .L "long strton(char* s, char** e)"
 .SH DESCRIPTION
 .I strton
-converts the nul-terminated string
+converts the null-terminated string
 .I s
 to a long integer.
 If