Explain avoiding x-popup-menu for menu bar submenu.
tree5ee12bb24ee710d0ffc5c37d442d7ebd8b3b4f8d
-rw-r--r-- 4558 GETTING.GNU.SOFTWARE
-rw-r--r-- 24906 INSTALL
-rw-r--r-- 20759 Makefile.in
-rw-r--r-- 30940 PROBLEMS
-rwxr-xr-x 4762 build-ins.in
-rw-r--r-- 5374 config.bat
-rwxr-xr-x 16414 config.guess
-rwxr-xr-x 18024 config.sub
-rw-r--r-- 43034 configure.in
-rwxr-xr-x 50350 configure1.in
drwxr-xr-x - etc
drwxr-xr-x - lib-src
drwxr-xr-x - lisp
drwxr-xr-x - lispref
drwxr-xr-x - lwlib
-rwxr-xr-x 13867 make-dist
drwxr-xr-x - man
drwxr-xr-x - msdos
drwxr-xr-x - nt
drwxr-xr-x - src
-rw-r--r-- 7502 tparam.c
-rw-r--r-- 219 vpath.sed