wr_endpoint/ep_1000basex_pcs.vhd: de-assert busy flag when there's no link to avoid blocking packet source, added some comments

wr_endpoint/ep_tx_framer.vhd: stall-on-beginning of packet bugfix, OOB type checking bugfix, added programmable inter-packet gap (for testing swcore)

wr_endpoint/ep_rx_status_reg_insert.vhd: fixed wrong status reg value (packets outputted from the EP do not include CRCs)

wr_endpoint/ep_tx_pcs_16bit.vhd: added sync chain on AN enable line, fixed freeze in TX calibration pattern state bug

Conflicts:
	top/spec_1_1/wr_core_demo/spec_top.vhd

	modified:   endpoint_regs.v
	modified:   minic_regs.vh

modules/wr_endpoint: wr_endpoint.vhd: padded unused WB singals to inactive values, removed old buffer commented code