[build] set HOME during tests to a known writable dir

Defect Number:
    Reviewed By:
   Testing Done:

TESTS_ENVIRONMENT.in

@@ -16,6 +16,9 @@ export test_dir
 BZIP2_CMD="@BZIP2_CMD@"
 export BZIP2_CMD
 
+HOME="${top_builddir}/test"
+export HOME
+
 # The full path of the test case
 test_file=$1
 # The base name of the test case

test/Makefile.am

@@ -253,3 +253,4 @@ DISTCLEANFILES = \
 
 distclean-local:
 	rm -rf sessions
+	rm -rf .lnav

test/Makefile.in

@@ -1534,6 +1534,7 @@ simple-db.db: simple-db.sql
 
 distclean-local:
 	rm -rf sessions
+	rm -rf .lnav
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.