lib-httpd: extend module location auto-detection

Although it is possible to manually set LIB_HTTPD_PATH and
LIB_HTTPD_MODULE_PATH to point at the location of `httpd` and its
modules, doing so is cumbersome and easily forgotten. To address this,
0d34473 (t/lib-http.sh: Restructure finding of default httpd
location, 2010-01-02) enhanced lib-httpd.sh to automatically detect the
location of `httpd` and its modules in order to facilitate out-of-the-
box testing on a wider range of platforms. Follow that lead by further
enhancing it to automatically detect the `httpd` modules on Void Linux,
as well.

Signed-off-by: Eric Sunshine <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: sunshineco

t/lib-httpd.sh

@@ -65,7 +65,8 @@ done
 for DEFAULT_HTTPD_MODULE_PATH in '/usr/libexec/apache2' \
 				 '/usr/lib/apache2/modules' \
 				 '/usr/lib64/httpd/modules' \
-				 '/usr/lib/httpd/modules'
+				 '/usr/lib/httpd/modules' \
+				 '/usr/libexec/httpd'
 do
 	if test -d "$DEFAULT_HTTPD_MODULE_PATH"
 	then