[california] Fix Debian build for main PPA

[Jim Nelson <jnelson src gnome org>]

commit 69723261353c6e1ec11fb81cabd4532a8aba3cd0
Author: Jim Nelson <jim yorba org>
Date:   Tue Mar 24 14:43:42 2015 -0700

    Fix Debian build for main PPA
    
    Change for dh_override_auto_configure fixed problem in Daily Build
    PPA but broke build on main PPA.  (Daily Build pulls from git master
    and must use ./autogen.sh; the main PPA builds from tarball and needs
    to use ./configure).

 debian/changelog |    2 +-
 debian/rules     |    3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/debian/changelog b/debian/changelog
index b199534..d7bcd00 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,4 +1,4 @@
-california (0.4.0-1~vivid1) vivid; urgency=low
+california (0.4.0-4~vivid1) vivid; urgency=low
 
   * Fix UI issue where date span of event could not be reduced (#744147)
   * Add ftp, ftps support for WebCal
diff --git a/debian/rules b/debian/rules
index d2e5d0d..f314bee 100755
--- a/debian/rules
+++ b/debian/rules
@@ -12,7 +12,8 @@
 %:
        dh $@ --parallel
 
-override_dh_auto_configure: configure
+override_dh_auto_configure:
+       ./configure --prefix=/usr --enable-unity
 
 configure:
        ./autogen.sh --prefix=/usr --enable-unity