[m-rev.] for review: update and add .gitignore files in samples, tests and extras distribution

[Sebastian Godelet]

for review by anyone.

branch: master

Updating .gitignore files to ignore Unix executables
and intermediate files.

extras/.gitignore:
    ignore *.beams

extras/cgi/.gitignore:
extras/gator/.gitignore:
extras/graphics/mercury_cairo/tutorial/.gitignore:
extras/logged_output/.gitignore:
extras/monte/.gitignore:
extras/odbc/.gitignore:
extras/posix/samples/.gitignore:
extras/quickcheck/.gitignore:
extras/quickcheck/tutes/.gitignore:
extras/references/samples/.gitignore:
    ignore executable(s)

extras/references/tests/.gitignore:
extras/trailed_update/tests/.gitignore:
    ignore test *.res and *.out files,
    ignore executable

extras/windows_installer_generator/sample/.gitignore:
samples/concurrency/dining_philosophers/.gitignore:
samples/concurrency/midimon/.gitignore:
    ignore executables

tests/hard_coded/.gitignore:
    ignore *.o and *.obj object files

diff --git a/extras/.gitignore b/extras/.gitignore
index 66d87d1..b33ceea 100644
--- a/extras/.gitignore
+++ b/extras/.gitignore
@@ -11,4 +11,5 @@ Mercury/**
 *.lib
 lib*.dylib
 lib*.so
+lib*.beams
 lib*.a
diff --git a/extras/cgi/.gitignore b/extras/cgi/.gitignore
new file mode 100644
index 0000000..8df1f57
--- /dev/null
+++ b/extras/cgi/.gitignore
@@ -0,0 +1 @@
+form_test
diff --git a/extras/gator/.gitignore b/extras/gator/.gitignore
new file mode 100644
index 0000000..79a0727
--- /dev/null
+++ b/extras/gator/.gitignore
@@ -0,0 +1 @@
+evolve
diff --git a/extras/graphics/mercury_cairo/tutorial/.gitignore
b/extras/graphics/mercury_cairo/tutorial/.gitignore
new file mode 100644
index 0000000..dd75662
--- /dev/null
+++ b/extras/graphics/mercury_cairo/tutorial/.gitignore
@@ -0,0 +1,11 @@
+fill
+mask
+paint
+path_close
+setsourcegradient
+setsourcergba
+showtext
+stroke
+testextents