checksrc: Fix issue with the autobuilds not picking up the whitelist

lib/Makefile.am

@@ -146,7 +146,7 @@ libcurl_la_SOURCES = $(CSOURCES) $(HHEADERS)
 libcurlu_la_SOURCES = $(CSOURCES) $(HHEADERS)
 
 checksrc:
-	@PERL@ $(top_srcdir)/lib/checksrc.pl -W$(top_srcdir)/lib/curl_config.h $(top_srcdir)/lib/*.[ch] $(top_srcdir)/lib/vauth/*.[ch] $(top_srcdir)/lib/vtls/*.[ch]
+	@PERL@ $(top_srcdir)/lib/checksrc.pl -D$(top_srcdir)/lib -Wcurl_config.h *.[ch] vauth/*.[ch] vtls/*.[ch]
 
 if CURLDEBUG
 # for debug builds, we scan the sources on all regular make invokes

src/Makefile.am

@@ -130,7 +130,7 @@ endif
 # ignore tool_hugehelp.c since it is generated source code and it plays
 # by slightly different rules!
 checksrc:
-	@@PERL@ $(top_srcdir)/lib/checksrc.pl -W$(top_srcdir)/src/tool_hugehelp.c $(top_srcdir)/src/*.[ch]
+	@@PERL@ $(top_srcdir)/lib/checksrc.pl -D$(top_srcdir)/src -Wtool_hugehelp.c *.[ch]
 
 if CURLDEBUG
 # for debug builds, we scan the sources on all regular make invokes