Add throws MojoExecutionException on getSources() mehtod

Hi,

I'm extending maven-source-plugin on Tycho.

In order to resolve source paths on Tycho I need to read some file, so, there is a change of getting an IOException on my getSources() implementation.

Patch:
Index: src/main/java/org/apache/maven/plugin/source/AbstractSourceJarMojo.java
===================================================================
— src/main/java/org/apache/maven/plugin/source/AbstractSourceJarMojo.java (revision 696714)
+++ src/main/java/org/apache/maven/plugin/source/AbstractSourceJarMojo.java (working copy)
@@ -134,7 +134,8 @@

• @param p not null
• @return the compile or test sources
  */

• protected abstract List getSources( MavenProject p );
  + protected abstract List getSources( MavenProject p )
  + throws MojoExecutionException;

/**

• @param p not null