Ensured various XPG7 stuff are declared properly in sys/stat.h (and cleanup)
New documentation for wcslen, wcsnlen, wcscasecmp (and friends), wcsdup.
Various other tweaks and markup improvements.

@@ -486,12 +486,15 @@
 file path=usr/share/man/man3c/wait.3c
 file path=usr/share/man/man3c/wait3.3c
 file path=usr/share/man/man3c/waitpid.3c
 file path=usr/share/man/man3c/walkcontext.3c
 file path=usr/share/man/man3c/wcrtomb.3c
+file path=usr/share/man/man3c/wcscasecmp.3c
 file path=usr/share/man/man3c/wcscoll.3c
+file path=usr/share/man/man3c/wcsdup.3c
 file path=usr/share/man/man3c/wcsftime.3c
+file path=usr/share/man/man3c/wcslen.3c
 file path=usr/share/man/man3c/wcsrtombs.3c
 file path=usr/share/man/man3c/wcsstr.3c
 file path=usr/share/man/man3c/wcstod.3c
 file path=usr/share/man/man3c/wcstoimax.3c
 file path=usr/share/man/man3c/wcstol.3c

@@ -1299,21 +1302,24 @@
 link path=usr/share/man/man3c/watof.3c target=wcstod.3c
 link path=usr/share/man/man3c/watoi.3c target=wcstol.3c
 link path=usr/share/man/man3c/watol.3c target=wcstol.3c
 link path=usr/share/man/man3c/watoll.3c target=wcstol.3c
 link path=usr/share/man/man3c/wcrtomb_l.3c target=wcrtomb.3c
+link path=usr/share/man/man3c/wcscasecmp_l.3c target=wcscasecmp.3c
 link path=usr/share/man/man3c/wcscat.3c target=wcstring.3c
 link path=usr/share/man/man3c/wcschr.3c target=wcstring.3c
 link path=usr/share/man/man3c/wcscmp.3c target=wcstring.3c
 link path=usr/share/man/man3c/wcscoll_l.3c target=wcscoll.3c
 link path=usr/share/man/man3c/wcscpy.3c target=wcstring.3c
 link path=usr/share/man/man3c/wcscspn.3c target=wcstring.3c
 link path=usr/share/man/man3c/wcsetno.3c target=cset.3c
-link path=usr/share/man/man3c/wcslen.3c target=wcstring.3c
+link path=usr/share/man/man3c/wcsncasecmp.3c target=wcscasecmp.3c
+link path=usr/share/man/man3c/wcsncasecmp_l.3c target=wcscasecmp.3c
 link path=usr/share/man/man3c/wcsncat.3c target=wcstring.3c
 link path=usr/share/man/man3c/wcsncmp.3c target=wcstring.3c
 link path=usr/share/man/man3c/wcsncpy.3c target=wcstring.3c
+link path=usr/share/man/man3c/wcsnlen.3c target=wcslen.3c
 link path=usr/share/man/man3c/wcsnrtombs.3c target=wcsrtombs.3c
 link path=usr/share/man/man3c/wcsnrtombs_l.3c target=wcsrtombs.3c
 link path=usr/share/man/man3c/wcspbrk.3c target=wcstring.3c
 link path=usr/share/man/man3c/wcsrchr.3c target=wcstring.3c
 link path=usr/share/man/man3c/wcsrtombs_l.3c target=wcsrtombs.3c