[boilerplate] Daemonic conversion utility.

In order to achieve substantial speed improvements the external conversion
utilities are rewritten as a daemon that communicates with the test suite
over a local socket. This is faster as it avoids the libtool and dynamic
linker overhead for each invocation, the caches persist between tests and
we no longer require a round trip through libpng.

The daemon is started automatically by the test suite and if communication
cannot be established then it falls back to using a pipe to a normal
conversion utility. The daemon will then persist for 60 seconds waiting
for further connections.

Of course any memory leak (stares at poppler) is exacerbated.

1 files changed, 3 insertions, 0 deletions

diff --git a/test/.gitignore b/test/.gitignore
index a0c275e0..8590d8f4 100644
--- a/test/.gitignore
+++ b/test/.gitignore
@@ -9,6 +9,9 @@ a1-image-sample
 a1-mask
 a1-traps-sample
 a8-mask
+any2ppm
+.any2ppm
+.any2ppm.pid
 big-line
 big-trap
 bilevel-image