Fix the libcucul symlink installation when /bin/sh points to bash or any

shell that doesn't look for sourced files in $PWD.

caca/Makefile.am

@@ -76,7 +76,7 @@ driver_source = \
 
 install-exec-local:
 	$(mkinstalldirs) $(DESTDIR)$(libdir)
-	. libcaca.la; \
+	. ./libcaca.la || exit 1; \
 	for x in $$library_names; do \
 	  ln -sf $$x $(DESTDIR)$(libdir)/$$(echo $$x | sed 's/caca/cucul/g'); \
 	done
@@ -89,7 +89,7 @@ install-data-local:
 	ln -sf caca.h $(DESTDIR)$(includedir)/cucul.h
 
 uninstall-local:
-	. libcaca.la; \
+	. ./libcaca.la || exit 1; \
 	for x in $$library_names; do \
 	  rm -f $(DESTDIR)$(libdir)/$$(echo $$x | sed 's/caca/cucul/g'); \
 	done

cxx/Makefile.am

@@ -25,7 +25,7 @@ cxxtest_LDADD = libcaca++.la ../caca/libcaca.la
 if USE_CXX
 install-exec-local:
 	$(mkinstalldirs) $(DESTDIR)$(libdir)
-	. libcaca++.la; \
+	. ./libcaca++.la || exit 1; \
 	for x in $$library_names; do \
 	  ln -sf $$x $(DESTDIR)$(libdir)/$$(echo $$x | sed 's/caca/cucul/g'); \
 	done
@@ -37,7 +37,7 @@ install-data-local:
 endif
 
 uninstall-local:
-	. libcaca++.la; \
+	. ./libcaca++.la || exit 1; \
 	for x in $$library_names; do \
 	  rm -f $(DESTDIR)$(libdir)/$$(echo $$x | sed 's/caca/cucul/g'); \
 	done