Merge pull request #1134 from oalbrigt/send_arp-avoid-cast-alignment-issue-on-arm

send_arp: dont use "-Wcast-align" due to false-positive fail on ARM.

Author: oalbrigt

configure.ac

@@ -807,7 +807,6 @@ else
 		-Wall
 		-Wbad-function-cast 
 		-Wcast-qual 
-		-Wcast-align 
 		-Wdeclaration-after-statement
 		-Wendif-labels
 		-Wfloat-equal