ENH: DCMTK 3.6.4 api changes accomodated
ENH: DCMTK 3.6.4 api changes accomodated

Dictionary locking/unlocking function
names changed.

LucasGandel/ITK,LucasGandel/ITK,thewtex/ITK,blowekamp/ITK,BRAINSia/ITK,malaterre/ITK,blowekamp/ITK,InsightSoftwareConsortium/ITK,hjmjohnson/ITK,malaterre/ITK,vfonov/ITK,fbudin69500/ITK,InsightSoftwareConsortium/ITK,blowekamp/ITK,BRAINSia/ITK,hjmjohnson/ITK,malaterre/ITK,vfonov/ITK,fbudin69500/ITK,hjmjohnson/ITK,fbudin69500/ITK,LucasGandel/ITK,thewtex/ITK,vfonov/ITK,malaterre/ITK,BRAINSia/ITK,InsightSoftwareConsortium/ITK,vfonov/ITK,Kitware/ITK,Kitware/ITK,richardbeare/ITK,malaterre/ITK,Kitware/ITK,richardbeare/ITK,Kitware/ITK,thewtex/ITK,LucasGandel/ITK,Kitware/ITK,hjmjohnson/ITK,blowekamp/ITK,malaterre/ITK,richardbeare/ITK,richardbeare/ITK,vfonov/ITK,InsightSoftwareConsortium/ITK,thewtex/ITK,InsightSoftwareConsortium/ITK,BRAINSia/ITK,hjmjohnson/ITK,BRAINSia/ITK,hjmjohnson/ITK,richardbeare/ITK,blowekamp/ITK,hjmjohnson/ITK,richardbeare/ITK,fbudin69500/ITK,fbudin69500/ITK,LucasGandel/ITK,BRAINSia/ITK,malaterre/ITK,LucasGandel/ITK,LucasGandel/ITK,vfonov/ITK,blowekamp/ITK,malaterre/ITK,InsightSoftwareConsortium/ITK,fbudin69500/ITK,blowekamp/ITK,richardbeare/ITK,vfonov/ITK,LucasGandel/ITK,thewtex/ITK,thewtex/ITK,blowekamp/ITK,fbudin69500/ITK,BRAINSia/ITK,vfonov/ITK,vfonov/ITK,malaterre/ITK,Kitware/ITK,fbudin69500/ITK,thewtex/ITK,Kitware/ITK,InsightSoftwareConsortium/ITK