stringeq: prefer streq to strcmp in other modules * lib/acl-internal.c, lib/argmatch.c, lib/argp-help.c: * lib/argp-parse.c, lib/bcp47.c, lib/c32_get_mapping.c: * lib/c32_get_type_test.c, lib/concat-filename.c: * lib/cpu-supports.h, lib/dfa.c, lib/duplocale.c, lib/exclude.c: * lib/findprog-in.c, lib/findprog.c, lib/fopen.c, lib/freopen.c: * lib/fts.c, lib/gen-uni-tables.c, lib/getfilecon.c: * lib/getlogin.c, lib/getugroups.c, lib/hard-locale.c: * lib/hashcode-named-file.c, lib/hashkey-string.c: * lib/iconv_open.c, lib/idcache.c, lib/lc-charset-unicode.c: * lib/localcharset.c, lib/localename-environ.c: * lib/localename-unsafe.c, lib/mbs_endswith.c, lib/mountlist.c: * lib/newlocale.c, lib/nl_langinfo.c, lib/nproc.c, lib/open.c: * lib/os2-spawn.c, lib/parse-datetime.y, lib/popen.c: * lib/progreloc.c, lib/propername.c, lib/pt_chown.c, lib/putenv.c: * lib/qcopy-acl.c, lib/readutmp.c, lib/rpmatch.c: * lib/setlocale-fixes.c, lib/setlocale.c, lib/sig2str.c: * lib/spawni.c, lib/stat.c, lib/str_endswith.c, lib/streq.h: * lib/striconveha.c, lib/struniq.h, lib/supersede.c: * lib/time_rz.c, lib/unicodeio.c, lib/vasnprintf.c: * lib/vc-mtime.c, lib/wctrans-impl.h, lib/wctype-impl.h: Prefer streq to strcmp when either will do. Do not make this change to files shared with glibc. Do not make the change to test files, at least not for now. * lib/gen-uni-tables.c (streq): New static function, in same style. * modules/acl-permissions, modules/argp, modules/c32_get_mapping: * modules/c32_get_type_test, modules/concat-filename: * modules/cpu-supports, modules/dfa, modules/duplocale: * modules/exclude, modules/findprog, modules/findprog-in: * modules/fopen, modules/fopen-gnu, modules/freopen, modules/fts: * modules/getlocalename_l-simple, modules/getlocalename_l-unsafe: * modules/getlogin, modules/getugroups, modules/hard-locale: * modules/hashcode-named-file, modules/hashkey-string: * modules/iconv_open, modules/idcache, modules/localcharset: * modules/localename, modules/localename-unsafe: * modules/mbs_endswith, modules/mountlist, modules/newlocale: * modules/nl_langinfo, modules/nproc, modules/open: * modules/parse-datetime, modules/popen: * modules/posix_spawn-internal, modules/propername: * modules/pt_chown, modules/putenv-gnu, modules/qcopy-acl: * modules/rpmatch, modules/selinux-h, modules/setenv: * modules/setlocale, modules/setlocale-fixes, modules/sig2str: * modules/spawn-pipe, modules/stat, modules/str_endswith: * modules/streq, modules/striconveha, modules/supersede: * modules/time_rz, modules/uchar-h, modules/unicodeio: * modules/uniconv/base, modules/wctrans, modules/wctype: (Depends-on): Add stringeq.