ci: speed up code-coverage jobs

Plus some documentation updates

Change-Id: I6fd2b04e22bca6c3d6e36e78d1995220e261206b
Refs: #3809
diff --git a/.jenkins.d/10-build.sh b/.jenkins.d/10-build.sh
index b6513be..9c6cb7c 100755
--- a/.jenkins.d/10-build.sh
+++ b/.jenkins.d/10-build.sh
@@ -13,7 +13,7 @@
 # Cleanup
 sudo ./waf -j1 --color=yes distclean
 
-if [[ "$JOB_NAME" != *"limited-build" ]]; then
+if [[ $JOB_NAME != *"code-coverage" && $JOB_NAME != *"limited-build" ]]; then
   # Configure/build static library in optimized mode with tests
   ./waf -j1 --color=yes configure --enable-static --disable-shared --with-tests
   ./waf -j1 --color=yes build
@@ -30,7 +30,7 @@
 fi
 
 # Configure/build shared library in debug mode with tests/examples and without precompiled headers
-if [[ "$JOB_NAME" == *"code-coverage" ]]; then
+if [[ $JOB_NAME == *"code-coverage" ]]; then
     COVERAGE="--with-coverage"
 elif ! has OSX-10.9 $NODE_LABELS && ! has OSX-10.11 $NODE_LABELS; then
     ASAN="--with-sanitizer=address"