Convert all xbps-base-chroot pkgs to subpkgs.

Also introduce "libs.depends", that adds a rundep of a package
with a proper version. This is to avoid modifying all dependent
packages if there's an API/ABI change.

--HG--
extra : convert_revision : a46b11b8e9187bdb2bfc954ad5ff40ecd9c0fe31

templates/glibc/base.template

@@ -7,7 +7,8 @@ long_desc="${long_desc}
 
 conf_files="/etc/localtime /etc/ld.so.cache /etc/ld.so.conf /etc/rpc
  /etc/nsswitch.conf"
-run_depends="glibc-libs-${version}"
+
+. ${XBPS_TEMPLATESDIR}/glibc/libs.depends
 
 do_install()
 {

templates/glibc/dev.template

@@ -4,7 +4,8 @@ short_desc="${short_desc} (development files)"
 long_desc="${long_desc}
 
  This package contains files for development, headers, static libs, etc."
-run_depends="glibc-libs-${version}"
+
+. ${XBPS_TEMPLATESDIR}/glibc/libs.depends
 
 do_install()
 {

templates/glibc/libs.depends

@@ -0,0 +1 @@
+run_depends="${run_depends} glibc-libs-2.8"