test script for expressions added

testscript

+#var exprDebug 1
+
+x=3, !3, -3, ~3, 3?
+# $(x) should be: 3, 0, -3, -4, 1
+
+x=10+3, 10-3, 10*3, 10/3, 10%3, 10**3
+# $(x) should be: 13, 7, 30, 3, 1, 1000
+
+x=%x -10<<2, %x -10>>2, %x -10>>>2 
+# $(x) should be: ffffffffffffffd8, fffffffffffffffd, 3ffffffffffffffd
+
+x=%x 0xaa & 0x0f, %x 0xaa | 0x0f, %x 0xaa ^ 0x0f
+# $(x) should be: a, af, a5
+
+x=10<20 10<=20 10==20 10>=20 10>20 10<=>20
+# $(x) should be: 1 1 0 0 0 -1
+
+x=20<20 20<=20 20==20 20>=20 20>20 20<=>20
+# $(x) should be: 0 1 1 1 0 0
+
+x=20<10 20<=10 20==10 20>=10 20>10 20<=>10
+# $(x) should be: 0 0 0 1 1 1
+
+x= (0|0)(0|1)(1|0)(1|1) (0&0)(0&1)(1&0)(1&1)
+# $(x) should be: 0111 0001
+
+x=1*2*3+4*5*6-7-8
+# $(x) should be: 111
+
+x=1*2*3+4*5*6-7*8
+# $(x) should be: 70
+
+x=-3**2+1, -(3**2)+1, (-3)**2+1, -3**-2+1, (1+2), (1+2, 1+2)
+# $(x) should be: 10, -8, 10, 1, 3, (1+2, 3)
+
+x=%#X 0x5555&0xfff0|0xaf<<8^0xa00a0>>4+1
+# $(x) should be: 0X5F5B
+
+x=7+4*2|32
+# $(x) should be: 47
+
+x=3<5 ? 7+4*2|32 : 9 & 10
+# $(x) should be: 47
+
+x=3>5 ? 7+4*2|32 : 9 & 10
+# $(x) should be: 8
+
+x=7 ?: -1
+# $(x) should be: 7
+
+x=0 ?: -1
+# $(x) should be: -1
+
+x=7 ? -1
+# $(x) should be: -1
+
+x=0 ? -1
+# $(x) should be: 0
+
+x=1+0?0?1:2:3?4:5
+# $(x) should be: 2
+
+x=1+0?7?1:2:3?4:5
+# $(x) should be: 1
+
+x=1+1?0?1:2:3-3?4:5
+# $(x) should be: 2
+
+x=1-1?0?1:2:3?4:5
+# $(x) should be: 4
+
+x=1-1?0?1:2:3-3?4:5
+# $(x) should be: 5
+
+x=0?; 1?; 2?; -4?
+# $(x) should be: 0; 1; 1; 1
+
+x=a030b a(030)b a( 030 )b "a"030"b" a(%x 030)b
+# $(x) should be: a030b a24b a24b a24b a18b