gio: automake: Add libgmodule dependency

Otherwise I get following compile error:

 libtool: link: /home/builduser/toolchains/linux/tc/2017-12/x86-ncp-linux-gnu/bin/i686-ncp-linux-gnu-gcc -Wall -Wstrict-prototypes -Wmisleading-indentation -Wno-bad-function-cast -Werror=declaration-after-statement -Werror=missing-prototypes -Werror=implicit-function-declaration -Werror=pointer-arith -Werror=init-self -Werror=format=2 -O2 -Wall -pipe -Wformat -g -fstack-protector-strong -fPIC -fno-strict-aliasing -Wl,-z -Wl,relro -Wl,-z -Wl,now -Wl,-rpath-link=/home/builduser/workspaces/rws_trunk_linux_x86_build_shared-fips/build/3p/linux/x86/install/zlib/lib -Wl,-rpath-link=/home/builduser/workspaces/rws_trunk_linux_x86_build_shared-fips/build/3p/linux/x86/install/libffi/lib -o .libs/gio gio-tool.o gio-tool-cat.o gio-tool-copy.o gio-tool-info.o gio-tool-list.o gio-tool-mime.o gio-tool-mkdir.o gio-tool-monitor.o gio-tool-mount.o gio-tool-move.o gio-tool-open.o gio-tool-rename.o gio-tool-remove.o gio-tool-save.o gio-tool-set.o gio-tool-trash.o gio-tool-tree.o  -L/home/builduser/workspaces/rws_trunk_linux_x86_build_shared-fips/build/3p/linux/x86/install/zlib/lib -L/home/builduser/workspaces/rws_trunk_linux_x86_build_shared-fips/build/3p/linux/x86/install/libffi/lib ./.libs/libgio-2.0.so ../gobject/.libs/libgobject-2.0.so ../glib/.libs/libglib-2.0.so -Wl,-rpath -Wl,/home/builduser/workspaces/rws_trunk_linux_x86_build_shared-fips/build/3p/linux/x86/install/glib/lib
 /home/builduser/toolchains/linux/tc/2017-12/x86-ncp-linux-gnu/bin/../lib/gcc/i686-ncp-linux-gnu/6.3.0/../../../../i686-ncp-linux-gnu/bin/ld: warning: libgmodule-2.0.so.0, needed by ./.libs/libgio-2.0.so, not found (try using -rpath or -rpath-link)
 ./.libs/libgio-2.0.so: undefined reference to `g_module_error'
 ./.libs/libgio-2.0.so: undefined reference to `g_module_close'
 ./.libs/libgio-2.0.so: undefined reference to `g_module_open'
 ./.libs/libgio-2.0.so: undefined reference to `g_module_supported'
 ./.libs/libgio-2.0.so: undefined reference to `g_module_symbol'
 collect2: error: ld returned 1 exit status
 Makefile:2300: recipe for target 'gio' failed

Signed-off-by: Bernhard Walle bernhard@bwalle.de