Updated BPM symbol to the 'real' BPM symbol.

...C-SYNOPTIC/synopticsfiles/linac_synoptics_section_A2T.bob

...C-SYNOPTIC/synopticsfiles/linac_synoptics_section_DTL.bob

...-SYNOPTIC/synopticsfiles/linac_synoptics_section_DmpL.bob

...C-SYNOPTIC/synopticsfiles/linac_synoptics_section_HBL.bob

...-SYNOPTIC/synopticsfiles/linac_synoptics_section_HEBT.bob

...C-SYNOPTIC/synopticsfiles/linac_synoptics_section_MBL.bob

...-SYNOPTIC/synopticsfiles/linac_synoptics_section_MEBT.bob

...C-SYNOPTIC/synopticsfiles/linac_synoptics_section_Spk.bob

...VED/COMMON/LINAC-SYNOPTIC/synopticsfiles/symbols/BPM2.svg