Proper spacing in makefile command line continuations

Quoting "The Open Group Base Specifications Issue 7" at
<http://pubs.opengroup.org/onlinepubs/9699919799/utilities/make.html#tag_20_76_13_01>
"Extended Description: Makefile Syntax:"  "When an escaped <newline> is found in
a command line in a makefile, the command line shall contain the <backslash>,
the <newline>, and the next line, except that the first character of the next
line shall not be included if it is a <tab>."

On Mac OS X, this caused raptor and rasqal to erroneously be configured with a
--prefix argument that ended in "--disable-static".

Change-Id: I9455f8e2e624b245a5278a21d8b0f62d8780f9e4

redland/ExternalProject_raptor.mk

@@ -47,7 +47,7 @@ $(call gb_ExternalProject_get_state_target,raptor,build):
 	--without-threestone --with-regex-library=posix --with-decimal=none \
 	--with-www=xml \
 	$(if $(filter YES,$(CROSS_COMPILING)),--build=$(BUILD_PLATFORM) --host=$(HOST_PLATFORM)) \
-        $(if $(filter MACOSX,$(OS)),--prefix=/@.__________________________________________________OOO)\
+        $(if $(filter MACOSX,$(OS)),--prefix=/@.__________________________________________________OOO) \
 	$(if $(filter IOS ANDROID,$(OS)),--disable-shared,--disable-static) \
 	$(if $(filter NO,$(SYSTEM_LIBXSLT)),--with-xslt-config=$(OUTDIR)/bin/xslt-config) \
 	$(if $(filter NO,$(SYSTEM_LIBXML)), \

redland/ExternalProject_rasqal.mk

@@ -48,7 +48,7 @@ $(call gb_ExternalProject_get_state_target,rasqal,build):
 	--without-postgresql --without-threestone --with-regex-library=posix \
 	--with-decimal=none --with-www=xml \
 	$(if $(filter YES,$(CROSS_COMPILING)),--build=$(BUILD_PLATFORM) --host=$(HOST_PLATFORM)) \
-	$(if $(filter MACOSX,$(OS)),--prefix=/@.__________________________________________________OOO)\
+	$(if $(filter MACOSX,$(OS)),--prefix=/@.__________________________________________________OOO) \
 	$(if $(filter IOS ANDROID,$(OS)),--disable-shared,--disable-static) \
 	&& $(MAKE) \
 	&& touch $@