Xquartz: rename man page directory from doc to man

Following the convention makes it easier to locate man pages,
user's or developer's documentation and specifications.

Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Rémi Cardona <remi@gentoo.org>
Signed-off-by: Gaetan Nadon <memsize@videotron.ca>
Signed-off-by: Keith Packard <keithp@keithp.com>

configure.ac

@@ -2256,7 +2256,7 @@ hw/xwin/man/Makefile
 hw/xquartz/Makefile
 hw/xquartz/GL/Makefile
 hw/xquartz/bundle/Makefile
-hw/xquartz/doc/Makefile
+hw/xquartz/man/Makefile
 hw/xquartz/mach-startup/Makefile
 hw/xquartz/pbproxy/Makefile
 hw/xquartz/xpr/Makefile

hw/xquartz/Makefile.am

@@ -14,9 +14,9 @@ if GLX
 GL_DIR = GL
 endif
 
-SUBDIRS = bundle . $(GL_DIR) xpr pbproxy mach-startup doc
+SUBDIRS = bundle . $(GL_DIR) xpr pbproxy mach-startup man
 
-DIST_SUBDIRS = bundle . GL xpr pbproxy mach-startup doc
+DIST_SUBDIRS = bundle . GL xpr pbproxy mach-startup man
 
 libXquartz_la_SOURCES = \
 	$(top_srcdir)/fb/fbcmap_mi.c \