Resolve merge conflicts with devel branch refactoring (#25423)

The PR branch had merge conflicts with `devel` due to a major compiler
refactoring that extracted type definitions from `compiler/ast.nim` into
a new `compiler/astdef.nim` file.

## Changes

- Resolved conflict in `compiler/ast.nim` by accepting `devel`'s
refactored structure
- Merged 763 commits from `devel` branch (commit range:
`ce6a345..b3273e7`)
- Preserved original PR changes removing deprecated symbols from
`lib/core/macros.nim`

The core PR functionality (removal of deprecated macros API since
v0.18.1) remains intact while incorporating the upstream AST
refactoring.

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tests/stdlib/tarithmetics.nim

@@ -1,6 +1,7 @@
 discard """
   matrix: "--mm:refc; --mm:orc"
   targets: "c cpp js"
+  disabled: "osx"
 """
 import std/assertions
 # TODO: in future work move existing arithmetic tests (tests/arithm/*) into this file

tests/stdlib/thttpclient.nim

@@ -3,6 +3,7 @@ discard """
   disabled: "openbsd"
   disabled: "freebsd"
   disabled: "windows"
+  disabled: "osx"
 """
 
 #[

tests/stdlib/tstrutils.nim

@@ -642,6 +642,30 @@ template main() =
       let myA = CAMPAIGN_TABLE
       doAssert $parseEnum[Tables](myA) == "wikientries_campaign"
 
+    block:
+      const tripleQuotedStr = """foobar"""
+
+      type MyEnum = enum
+        a = tripleQuotedStr
+        b = """bazquz"""
+
+      let myA = tripleQuotedStr
+      doAssert $parseEnum[MyEnum](myA) == myA
+      let myB = "bazquz"
+      doAssert $parseEnum[MyEnum](myB) == myB
+
+    block:
+      const rawStr = r"foobar"
+
+      type MyEnum = enum
+        a = rawStr
+        b = r"bazquz"
+
+      let myA = rawStr
+      doAssert $parseEnum[MyEnum](myA) == myA
+      let myB = r"bazquz"
+      doAssert $parseEnum[MyEnum](myB) == myB
+
     block: # check enum defined in block
       type
         Bar = enum

tests/stdlib/tunicode.nim

@@ -194,6 +194,23 @@ block stripTests:
   doAssert(strip("×text×", leading = false, runes = ["×".asRune]) == "×text")
   doAssert(strip("×text×", trailing = false, runes = ["×".asRune]) == "text×")
 
+  doAssert(strip("\u2000") == "")
+  doAssert(strip("a\u2000") == "a")
+
+  # bug #19846
+  block:
+    # check against unicode whose utf8 byteLen > 2
+    doAssert(strip("‟„”“‛‚’‘‗•STR•‗‘’‚‛“”„‟", runes = "•‗‘’‚‛“”„‟".toRunes) == "STR")
+    let chi = "abc\u8377\u9020"
+    doAssert(strip(chi, leading = false, runes = ["\u9020".asRune]) == "abc\u8377")
+    doAssert(strip(chi) == chi)  # the last byte of s is \x0a, which is in unicodeSpace
+
+    let
+      grinning_face = "\u{1f600}"
+      thinking_face = "\u{1f914}"
+    doAssert(strip(grinning_face & thinking_face & thinking_face,
+                   runes = thinking_face.toRunes) == grinning_face)
+
 block repeatTests:
   doAssert repeat('c'.Rune, 5) == "ccccc"
   doAssert repeat("×".asRune, 5) == "×××××"