Moved modelsim_search_libraries key to hdltool_<toolset>.cfg

libraries/technology/10gbase_r/hdllib.cfg

libraries/technology/eth_10g/hdllib.cfg

libraries/technology/ip_arria10/ddio/hdllib.cfg

libraries/technology/ip_arria10/tse_sgmii_gx/hdllib.cfg

libraries/technology/ip_arria10/tse_sgmii_lvds/hdllib.cfg

...echnology/ip_stratixiv/ddr3_uphy_4g_800_master/hdllib.cfg

...technology/ip_stratixiv/ddr3_uphy_4g_800_slave/hdllib.cfg

libraries/technology/ip_stratixiv/mac_10g/hdllib.cfg

libraries/technology/ip_stratixiv/phy_xaui/hdllib.cfg

libraries/technology/mac_10g/hdllib.cfg

libraries/technology/tse/hdllib.cfg