Added <options/> support to Proguard configuration

Additional Proguard options can be added using an <options/> element,
allowing to configure the plugin in a super POM.
fix: use parsedOptions instead of proguardOptions
Create a copy of manifest file and use it further.

Old mojo updated the original manifest, which could create issues if
the plugin is bound to the build process, especially during releases.

The new approach allows to create a copy of the manifest (usually
${project.build.directory}/AndroidManifest.xml) and use it to create
the APK.

This creates the possibility to use buildnumber-maven-plugin or other
extension if desired.
create directory for updatedManifestFile
use the recommended way to provide the obfuscated jar name to DexMojo
fixed checkstyle violations
fixed checkstyle violations
Added <options/> support to Proguard configuration

Additional Proguard options can be added using an <options/> element,
allowing to configure the plugin in a super POM.
fix: use parsedOptions instead of proguardOptions
use the recommended way to provide the obfuscated jar name to DexMojo
fixed checkstyle violations
Merge branch 'proguard-options' of git.ascelion.com:android/android-maven-plugin into proguard-options
Create a copy of manifest file and use it further.

Old mojo updated the original manifest, which could create issues if
the plugin is bound to the build process, especially during releases.

The new approach allows to create a copy of the manifest (usually
${project.build.directory}/AndroidManifest.xml) and use it to create
the APK.

This creates the possibility to use buildnumber-maven-plugin or other
extension if desired.
create directory for updatedManifestFile
fixed checkstyle violations
Merge branch 'manifest-update' of git.ascelion.com:android/android-maven-plugin into manifest-update
restored original android.proguard.outputDirectory
Follow up of issue-174, applied new MetaInf configuration to ApkMojo
Merge pull request #248 from pa314159/manifest-update

Manifest update
Merge pull request #250 from pa314159/issue-174-ext

Follow up of issue-174, applied new MetaInf configuration to ApkMojo