DRYing up AbstractAndroidMojo#doWithDevices
parallel device operations. ie: deploy, run
Adds support for predexing libraries to speed up dexing for application

Supported from r21 sdk
the predexed jars should also have jar extension for proper merge of predexed files.
Added getters and setters to NDK, Moved NDK ndk field from NdkBuildMojo
to AbstractAndroidMojo, Added ndk.getPath() (the
<ndk><path></path></ndk>) to getAndroidNdk implementation, changed so
that if a command line parameter android.ndkpath is available, it gets
picked first, then if <ndk><path></path></ndk> is available it gets
picked, then if an ANDROID_NDK_HOME env var is available, it gets picked
- I also changed it in javadocs.
Fixed Issue 331: Multiple proguardConfig
merged master
Added existence check for the res directory for APKLIBs
Merge pull request #165 from tlbollwitt/forked-mods

Forked mods
Merge pull request #163 from brudaswen/issue_331

Fixed Issue 331: Multiple proguardConfig
Merge branch 'ndk-multiple-libraries' of https://github.com/tptak/maven-android-plugin into ndk
Fixed Issue 342: Auto-generate ProGuard config from AndroidManifest.xml
Update README.asciidoc

Fix typo.
Add space between "and" & "the".
changed the predex jar location to the target directory

Added a flag to enable/disable predex'ing of jars, and its off by default.
ManifestUpdateMojo:
Added null checks for writing the xml version/encoding. This is needed when updating a Merged manifest at build time. e.g. - updating the versionName with a build timestamp.
Merge pull request #166 from iontech/patch-1

Update README.asciidoc
Merge pull request #161 from sragu/predex

Adds support for predexing libraries to speed up dexing for application
Merge pull request #164 from brudaswen/issue_342

Fixed Issue 342: Auto-generate ProGuard config from AndroidManifest.xml
Merge pull request #167 from tlbollwitt/forked-mods

ManifestUpdateMojo: null checks for xml version/encoding
Merge pull request #159 from jonasfa/parallel_device_operations

Parallel device operations