Normalize spelling: 'TMPDIR' -> 'TMP_DIR'.

inst/Makefile.in

@@ -10,7 +10,7 @@ RELEASE_TAG=<<VERSION_RELEASE_TAG>>
 PACKAGE_NAME=${NAME}-${MAJOR_VERSION}.${MINOR_VERSION}-${RELEASE_TAG}
 
 PYTHON="<<PYTHON>>"
-TMPDIR=<<TMP_DIR>>
+TMP_DIR=<<TMP_DIR>>
 PREFIX=<<PREFIX>>
 BASE_DIR=<<BASE_DIR>>
 BUILD_BASE=<<BUILD_BASE>>
@@ -118,8 +118,8 @@ sdist: clobber sdist_tgz
 # sdist_tgz:   Create a tgz archive file as a source distribution.
 #
 sdist_tgz: version_txt
-	${MKDIR} ${TMPDIR}
-	${CD} ${TMPDIR} && ${LN} ${BASE_DIR} ${PACKAGE_NAME} && \
+	${MKDIR} ${TMP_DIR}
+	${CD} ${TMP_DIR} && ${LN} ${BASE_DIR} ${PACKAGE_NAME} && \
           ${TAR} czfh ${BASE_DIR}/${PACKAGE_NAME}.tgz \
            --exclude=${PACKAGE_NAME}.tgz\
            --exclude=.svn\
@@ -127,7 +127,7 @@ sdist_tgz: version_txt
            --exclude=build-base \
            --exclude=*~ \
            --exclude=.#* ${PACKAGE_NAME} 
-	${RMRF} ${TMPDIR}/${PACKAGE_NAME}
+	${RMRF} ${TMP_DIR}/${PACKAGE_NAME}
 
 # clobber:     Make the source tree 'pristine' again.
 clobber: clean uninstance