Update default of install-umask to 022

And, with that, update the test cases that checked that preserving the
original permissions worked to set install_umask=preserve explicitly in
those projects' default_options.

Tested: ./run_tests.py

mesonbuild/coredata.py

@@ -456,7 +456,7 @@ builtin_options = {
     'backend':         [UserComboOption, 'Backend to use.', backendlist, 'ninja'],
     'stdsplit':        [UserBooleanOption, 'Split stdout and stderr in test logs.', True],
     'errorlogs':       [UserBooleanOption, "Whether to print the logs from failing tests.", True],
-    'install_umask':   [UserUmaskOption, 'Default umask to apply on permissions of installed files.', None],
+    'install_umask':   [UserUmaskOption, 'Default umask to apply on permissions of installed files.', '022'],
 }
 
 # Special prefix-dependent defaults for installation directories that reside in

test cases/common/12 data/meson.build

@@ -1,4 +1,5 @@
-project('data install test', 'c')
+project('data install test', 'c',
+  default_options : ['install_umask=preserve'])
 install_data(sources : 'datafile.dat', install_dir : 'share/progname')
 # Some file in /etc that is only read-write by root; add a sticky bit for testing
 install_data(sources : 'etcfile.dat', install_dir : '/etc', install_mode : 'rw------T')

test cases/common/66 install subdir/meson.build

@@ -1,4 +1,5 @@
-project('install a whole subdir', 'c')
+project('install a whole subdir', 'c',
+  default_options : ['install_umask=preserve'])
 
 # A subdir with an exclusion:
 install_subdir('sub2',