gpg4libre: Fix build by s/gpgme/gpgmepp/ on multiple places

let's see if it appeases the tinderboxes
Change-Id: Icfe97381395f5554d51cfb52289b3de89abbbb68
Reviewed-on: https://gerrit.libreoffice.org/34569
Reviewed-by: Katarina Behrens <Katarina.Behrens@cib.de>
Tested-by: Katarina Behrens <Katarina.Behrens@cib.de>
diff --git a/RepositoryExternal.mk b/RepositoryExternal.mk
index 48c6872..258e0b6 100644
--- a/RepositoryExternal.mk
+++ b/RepositoryExternal.mk
@@ -3393,11 +3393,11 @@
 
 ifneq ($(SYSTEM_GPGMEPP),)
 
-gb_ExternalProject__use_gpgme:=
+gb_ExternalProject__use_gpgmepp:=
 gb_ExternalProject__use_libassuan:=
 gb_ExternalProject__use_libgpg-error:=
 
-define gb_LinkTarget__use_gpgme
+define gb_LinkTarget__use_gpgmepp
 $(call gb_LinkTarget_set_include,$(1),\
 	$$(INCLUDE) \
 	$$(GPGMEPP_CFLAGS) \
@@ -3411,7 +3411,7 @@
 
 else # NON-SYSTEM_GPGME
 
-define gb_ExternalProject__use_gpgme
+define gb_ExternalProject__use_gpgmepp
 $(call gb_ExternalProject_use_external_project,$(1),gpgme)
 
 endef
@@ -3424,7 +3424,7 @@
 
 endef
 
-define gb_LinkTarget__use_gpgme
+define gb_LinkTarget__use_gpgmepp
 $(call gb_LinkTarget_set_include,$(1),\
 	-I$(call gb_UnpackedTarball_get_dir,gpgme)/lang/cpp/src \
 	$$(INCLUDE) \