Fix The name of the pc file for Ecore_Win32

Summary: With the current detection, ecore_win32.pc was used. Fix this to use ecore-win32.pc

Test Plan: compilation

Reviewers: cedric, jpeg, zmike

Differential Revision: https://phab.enlightenment.org/D3980

m4/efl.m4

@@ -171,6 +171,9 @@ case "m4_defn([DOWNOTHER])" in
    ecore_cocoa)
       depname="ecore-cocoa"
       ;;
+   ecore_win32)
+      depname="ecore-win32"
+      ;;
 esac
 requirements_pc_[]m4_defn([DOWNEFL])="${depname} >= ${PACKAGE_VERSION} ${requirements_pc_[][]m4_defn([DOWNEFL])}"
 requirements_cflags_[]m4_defn([DOWNEFL])="-I\$(top_srcdir)/src/lib/${libdirname} -I\$(top_builddir)/src/lib/${libdirname} ${requirements_cflags_[][]m4_defn([DOWNEFL])}"