avoid linking problems with libsamba (bsc#1212756)

[wfeldt]

Problem

• https://bugzilla.suse.com/show_bug.cgi?id=1212756

libsamba has also a load_module function. This runs into problems when linking both against libsamba and libhd.

Solution

load_module is an internal function and does not need to be exported. Hide load_module symbol.