Move SPECPARTS to per-pkg builddir, no longer needing name-version

This also simplifies cleanup as we only need to clean the per-build
directory now.

build/build.c

@@ -198,14 +198,7 @@ rpmRC doScript(rpmSpec spec, rpmBuildFlags what, const char *name,
 	fprintf(fp, "cd '%s'\n", buildSubdir);
 
     if (what == RPMBUILD_RMBUILD) {
-	if (rpmMacroIsDefined(spec->macros, "specpartsdir")) {
-	    char * buf = rpmExpand("%{specpartsdir}", NULL);
-	    fprintf(fp, "rm -rf '%s'\n", buf);
-	    free(buf);
-	}
-	if (buildSubdir[0] != '\0')
-	    fprintf(fp, "rm -rf '%s' '%s.gemspec'\n",
-		    buildSubdir, buildSubdir);
+	fprintf(fp, "rm -rf '%s'\n", spec->buildDir);
     } else if (sb != NULL)
 	fprintf(fp, "%s", sb);
 

macros.in

@@ -265,7 +265,7 @@ Supplements:   (%{name} = %{version}-%{release} and langpacks-%{1})\
 %_srcrpmdir		%{_topdir}/SRPMS
 
 #	Path for spec file snippets generated during build
-%specpartsdir %{_builddir}/%{buildsubdir}-SPECPARTS
+%specpartsdir %{_builddir}/SPECPARTS
 
 #	Directory where temporaray files can be created.
 %_tmppath		%{_var}/tmp

tests/rpmspec.at

@@ -333,8 +333,8 @@ if [ $STATUS -ne 0 ]; then
   exit $STATUS
 fi
 cd 'hello-1.0'
-rm -rf '/build/BUILD/hello-1.0-PKG/hello-1.0-SPECPARTS'
-/usr/bin/mkdir -p '/build/BUILD/hello-1.0-PKG/hello-1.0-SPECPARTS'
+rm -rf '/build/BUILD/hello-1.0-PKG/SPECPARTS'
+/usr/bin/mkdir -p '/build/BUILD/hello-1.0-PKG/SPECPARTS'
 /usr/bin/chmod -Rf a+rX,u+w,g-w,o-w .
 
 echo "Patch #0 (hello-1.0-modernize.patch):"