Update timer demo in PIC32MZ demo to remove multiple extern definition created by adding in the macro that checks non ISR safe functions are not called from ISRs.
Update timer demo in PIC32MZ demo to remove multiple extern definition created by adding in the macro that checks non ISR safe functions are not called from ISRs.

git-svn-id: 43aea61533866f88f23079d48f4f5dc2d5288937@2265 1d2547de-c912-0410-9cb9-b8ca96c0e9e2

kubostech/KubOS,Psykar/kubos,Psykar/kubos,Psykar/kubos,Psykar/kubos,Psykar/kubos,Psykar/kubos,Psykar/kubos,kubostech/KubOS