bug: slf4j bridges not used

[mkortkamp]

j-ftp has bundled versions of log4j and commons-logging therefore the alsf4j bridges aren't used when loggers are first found in j-ftp by classloader

[mkortkamp]

problem actually accurs with log4j when logging jediterm errors

[mkortkamp]

same with commons-codec

[mkortkamp]

bundled commons-httpclient has different package name than mucommander version -> not fine but save

[mkortkamp]

• current release of j-ftm bundles them too
• upadtingn to 1.6 an removing redundant bundled libs seems not to break FTP features :+1:
• slf4j is used when logging to log4j :+1:

[mkortkamp]

todo: check ant build bundles the new jar (might be hardcoded to take the old one)

[mkortkamp]

ant uses runtime lib dir recursiively for compiling and packaging

• done