Revert r1735544 and add -DBOOST_SYSTEM_NO_DEPRECATED to CFLAGS in

the makefile that actually has fixes the build problem with modern
boost.

sdext/source/pdfimport/makefile.mk

@@ -70,8 +70,6 @@ SHL1STDLIBS=\
     $(CPPULIB)			\
     $(SALLIB)
 
-CFLAGS+=-DBOOST_SYSTEM_NO_DEPRECATED
-
 .IF "$(GUI)" == "UNX"
     SHL1STDLIBS+=-lbasegfx_s
 .ELSE

sdext/source/pdfimport/pdfparse/makefile.mk

@@ -36,7 +36,7 @@ EXTERNAL_WARNINGS_NOT_ERRORS=TRUE
 CFLAGS+=-DSYSTEM_ZLIB
 .ENDIF
 
-ENVCFLAGS += -DBOOST_SPIRIT_USE_OLD_NAMESPACE
+ENVCFLAGS += -DBOOST_SPIRIT_USE_OLD_NAMESPACE -DBOOST_SYSTEM_NO_DEPRECATED
 
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