#4 xplc_ptr updates

[Anonymous]

xplc_ptr changes :
- all xplc_ptr constructors do an addRef()
- add a static protected method which returns a non
addRef()ed xplc_ptr
- declare XPLC class as friend of xplc_ptr
- update the copy constructor to only take the same
xplc_ptr type
- move the operator=(xplc_ptr) in the public part

XPLC class changes :
- add some new constructors in XPLC which directly return
a valid xplc_ptr with a refCount at 1

mutate method changes :
- the interface is only released if the getInterface() returns
a valid pointer

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Lionel Petit <ptiyo at="" ipsquad="" dot="" net="">

[Nobody/Anonymous]

xplc_ptr patch