Merge branch '3.4-maint'

* 3.4-maint:
  Prepare for v3.4.2
  direct .i mode: Don't create tmp.cpp_stderr file at all

diff --cc doc/NEWS.adoc
index 028705171bde8e903b88629c9355d78c94f44711,7cd4b60465585943dd82971f9e8340a0879ce7b4..a504d27af2da941c2e89cc829acf373351488ec5
--- 1/doc/NEWS.adoc
--- 2/doc/NEWS.adoc
+++ b/doc/NEWS.adoc
@@@ -1,25 -1,9 +1,25 @@@
  ccache news
  ===========
  
 +ccache 3.5
 +----------
 +Release date: unknown
 +
 +New features and enhancements
 +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 +
 +- Renamed `CCACHE_CC` to `CCACHE_COMPILER` (keeping the former as a deprecated
 +  alias).
 +
 +- It is now possible to let ccache hash a precomputed checksum file instead of
 +  the full content of a precompiled header. This can save time for large
 +  precompiled headers. Note that the build system needs to keep the checksum
 +  file in sync with the precompiled header for this to work.
 +
 +
  ccache 3.4.2
  ------------
- Release date: unknown
+ Release date: 2018-03-25
  
  Bug fixes
  ~~~~~~~~~

diff --cc src/ccache.c
Simple merge