build: unify mesa version by using a VERSION file

Rather than having to keep track of all the build systems and their respecitve
definition of the mesa version, use a single top file VERSION. Every build
system is responsible for reading/parsing the file and using it

v2:
* remove useless bulletpoint from the documentation, suggested by Matt
* "Androing is Linux. Use '/' in stead of '\'", spotted by Chad V
* use cleaner code to get the version in scons, suggested by Chad V

v3:
* ensure leading and trailing whitespace characters are stripped while parsing
* android: handle GNU shell commands approapriately

Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Chad Versace <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Signed-off-by: Emil Velikov <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/VERSION b/VERSION
new file mode 100644
index 00000000000..b260649025f
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+9.3.0-devel