configure: Add sanity checking for environment variables

[notmuch] / version

diff --git a/version b/version
index a4d2aceeb8dbfbe1485a13e51c67dc626bf67a4e..97e6908543a431cf42578cca4bd8a5b94d0c1b0e 100644 (file)
--- a/version
+++ b/version
@@ -1 +1 @@
-0.18
+0.20~rc1