bug fix with absolute uri IMPORT

exemple :
@import "/bootstrap/less/bootstrap.less";

if the source file is not present into root directory.


the compilation fail :

[ERROR] D:\dev\billetel\IRIS_14.03\modules\lotus\src\main\webapp\bordel\less\sty
les.less [0:0]: Error compiling LESS source
java.io.FileNotFoundException: File D:\dev\billetel\IRIS_14.03\modules\lotus\src
\main\webapp\bordel\less\bootstrap\less\bootstrap.less not found.
        at org.lesscss.LessSource.<init>(LessSource.java:59)
        at org.lesscss.LessSource.resolveImports(LessSource.java:145)
        at org.lesscss.LessSource.<init>(LessSource.java:63)
        at org.lesscss.mojo.CompileMojo.execute(CompileMojo.java:123)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(Default
BuildPluginManager.java:106)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:208)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:153)

the file "bootstrap.less" is not in "D:\dev\billetel\IRIS_14.03\modules\lotus\src
\main\webapp\bordel\less\bootstrap\less\bootstrap.less" but into D:\dev\billetel\IRIS_14.03\modules\lotus\src
\main\webapp\bordel\bootstrap\less\bootstrap.less"